These sure beat your average run of the mill .2g bbs! I use these in my JG Bar10 and have been having trouble sighting the scope in on it because a) I new to sniping and b) they are black! A word of advice from experience do not get black bbs until AFTER your scope is zeroed, get white to start out, THEN get black. Amazingly I played a game with these with my scope unzeroed and didn't get many kills (not the bbs fault, my fault), but I could tell I was coming close to hitting my targets at 150-200ft, but the people I shot at were looking right at me and never saw the bbs unless they came within inches of their face, then they took notice and hit the deck! I recommend these to anyone using a 400fps sniper or even for a 350-430fps assault rifle, if accuracy matters! Oh yeah I've have never had a jam and the bbs are all free of imperfections
Black: you won't see them till it's too late, if you see them at all
Free of imperfection
Won't jam your gun
Don't know if I should have got heavier bbs for a sniper
They are hard to zero scopes with because they are black
Also it is hard to know how much to compensate for wind because if you miss you don't see where the bb went!
Rating: [5 of 5 Stars!]